318 Build

If you're using the 340/360 heads, use the air gap. Using those heads, I'd probably spring for a set of KB-167's to keep the compression from being 4.9-1 ! :eek:


I was not planning on swapping pistons as my solution. Trying to keep it as budget as I can. The pistons in it are balanced to the assembly and look practically new. Since it came with 360 heads I am going to assume that was taken into consideration when it was originally put together. All going to the machine shop together to get an exact read on what was already done to block surface and previous 360 heads.
No dogs here....


A stock 72 318 with 360 heads will get 7.5 compression, an early 318 with 360 heads will be a little higher...

If you want to bump the compression into the 8's, get a set of original 66 - 67 273/318 heads with the smaller combustion chambers... Just port the heads and install larger intake and exhaust valves...